Thank you só very very much!
I'm so glad with your help, this I could never find.
And the greatest news is that in the end, after long long search, his sister Emma is found!
Would be really great if you can get an obituary of her too, she was married in Netherlands 1932, he died during the war and she went to USA , I guess because her parents and brother(s?) were there.
Thanks! Regards, Jettie